a650ccd638
commit 72aad489f992871e908ff6d9055b26c6366fb864 upstream.
The {dma|pio}_mode sysfs files are incorrectly documented as having a
list of the supported DMA/PIO transfer modes, while the corresponding
fields of the *struct* ata_device hold the transfer mode IDs, not masks.
To match these docs, the {dma|pio}_mode (and even xfer_mode!) sysfs
files are handled by the ata_bitfield_name_match() macro which leads to
reading such kind of nonsense from them:
$ cat /sys/class/ata_device/dev3.0/pio_mode
XFER_UDMA_7, XFER_UDMA_6, XFER_UDMA_5, XFER_UDMA_4, XFER_MW_DMA_4,
XFER_PIO_6, XFER_PIO_5, XFER_PIO_4, XFER_PIO_3, XFER_PIO_2, XFER_PIO_1,
XFER_PIO_0
Using the correct ata_bitfield_name_search() macro fixes that:
$ cat /sys/class/ata_device/dev3.0/pio_mode
XFER_PIO_4
While fixing the file documentation, somewhat reword the {dma|pio}_mode
file doc and add a note about being mostly useful for PATA devices to
the xfer_mode file doc...
Fixes:
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.. | ||
acard-ahci.c | ||
ahci_brcm.c | ||
ahci_ceva.c | ||
ahci_da850.c | ||
ahci_dm816.c | ||
ahci_imx.c | ||
ahci_mtk.c | ||
ahci_mvebu.c | ||
ahci_octeon.c | ||
ahci_platform.c | ||
ahci_qoriq.c | ||
ahci_seattle.c | ||
ahci_st.c | ||
ahci_sunxi.c | ||
ahci_tegra.c | ||
ahci_xgene.c | ||
ahci.c | ||
ahci.h | ||
ata_generic.c | ||
ata_piix.c | ||
Kconfig | ||
libahci_platform.c | ||
libahci.c | ||
libata-acpi.c | ||
libata-core.c | ||
libata-eh.c | ||
libata-pmp.c | ||
libata-scsi.c | ||
libata-sff.c | ||
libata-trace.c | ||
libata-transport.c | ||
libata-transport.h | ||
libata-zpodd.c | ||
libata.h | ||
Makefile | ||
pata_acpi.c | ||
pata_ali.c | ||
pata_amd.c | ||
pata_arasan_cf.c | ||
pata_artop.c | ||
pata_atiixp.c | ||
pata_atp867x.c | ||
pata_bk3710.c | ||
pata_cmd64x.c | ||
pata_cmd640.c | ||
pata_cs5520.c | ||
pata_cs5530.c | ||
pata_cs5535.c | ||
pata_cs5536.c | ||
pata_cypress.c | ||
pata_efar.c | ||
pata_ep93xx.c | ||
pata_falcon.c | ||
pata_ftide010.c | ||
pata_gayle.c | ||
pata_hpt3x2n.c | ||
pata_hpt3x3.c | ||
pata_hpt37x.c | ||
pata_hpt366.c | ||
pata_icside.c | ||
pata_imx.c | ||
pata_isapnp.c | ||
pata_it821x.c | ||
pata_it8213.c | ||
pata_ixp4xx_cf.c | ||
pata_jmicron.c | ||
pata_legacy.c | ||
pata_macio.c | ||
pata_marvell.c | ||
pata_mpc52xx.c | ||
pata_mpiix.c | ||
pata_netcell.c | ||
pata_ninja32.c | ||
pata_ns87410.c | ||
pata_ns87415.c | ||
pata_octeon_cf.c | ||
pata_of_platform.c | ||
pata_oldpiix.c | ||
pata_opti.c | ||
pata_optidma.c | ||
pata_palmld.c | ||
pata_pcmcia.c | ||
pata_pdc202xx_old.c | ||
pata_pdc2027x.c | ||
pata_piccolo.c | ||
pata_platform.c | ||
pata_pxa.c | ||
pata_radisys.c | ||
pata_rb532_cf.c | ||
pata_rdc.c | ||
pata_rz1000.c | ||
pata_samsung_cf.c | ||
pata_sc1200.c | ||
pata_sch.c | ||
pata_serverworks.c | ||
pata_sil680.c | ||
pata_sis.c | ||
pata_sl82c105.c | ||
pata_triflex.c | ||
pata_via.c | ||
pdc_adma.c | ||
sata_dwc_460ex.c | ||
sata_fsl.c | ||
sata_gemini.c | ||
sata_gemini.h | ||
sata_highbank.c | ||
sata_inic162x.c | ||
sata_mv.c | ||
sata_nv.c | ||
sata_promise.c | ||
sata_promise.h | ||
sata_qstor.c | ||
sata_rcar.c | ||
sata_sil24.c | ||
sata_sil.c | ||
sata_sis.c | ||
sata_svw.c | ||
sata_sx4.c | ||
sata_uli.c | ||
sata_via.c | ||
sata_vsc.c | ||
sis.h |